Rheology of asphalt

Rheology of asphalt refers to how asphalt behaves when it is deformed or flows under different temperatures and stresses. It describes its viscosity (thickness) and elasticity (stretching and returning), which vary with conditions. At high temperatures, asphalt becomes softer and flows more easily, aiding in paving. At lower temperatures, it becomes stiffer and less likely to deform. Understanding asphalt’s rheology helps engineers design mixtures that are durable, flexible in heat, and resistant to cracking or rutting, ensuring roads perform well over time under varying weather and traffic conditions.